Mathematics, 07.04.2021 01:10 riverviewfarm2133
Pearl solved a system of equations using substitution. Did she do it correctly? How do you know? If she did not find her error and solve the system correctly. 2x + (-5 - x) = 20 r-5= 20 X-5 + 5 = 20 + 5 x= 25 System: y=-5-X 2x + y = 20 Pearl's Solution: r = 25 y = -30
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Pearl solved a system of equations using substitution. Did she do it correctly? How do you know? If...
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